Bioacoustics & Ecoacoustics Glossary

near field

https://glossary.acousti.cloud/near_field

en

"The area less than one wavelength from a sound source. In this area pressure and particle velocity are out of phase and sound measurements are unpredictable." [1]

Reference: [1] Ewing AW. Arthropod Bioacoustics: Neurobiology and Behaviour. Ithaca, New York: Comstock; 1989.; Erbe et al. (2022), Exploring Animal Behavior Through Sound, Terms and Definitions. https://doi.org/10.1007/978-3-030-97540-1_4